+// SPDX-License-Identifier: GPL-2.0+
/*
* EFI image loader
*
* based partly on wine code
*
* Copyright (c) 2016 Alexander Graf
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <efi_loader.h>
#include <pe.h>
-#include <asm/global_data.h>
-
-DECLARE_GLOBAL_DATA_PTR;
const efi_guid_t efi_global_variable_guid = EFI_GLOBAL_VARIABLE_GUID;
const efi_guid_t efi_guid_device_path = DEVICE_PATH_GUID;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID;
const efi_guid_t efi_file_info_guid = EFI_FILE_INFO_GUID;
+static int machines[] = {
+#if defined(__aarch64__)
+ IMAGE_FILE_MACHINE_ARM64,
+#elif defined(__arm__)
+ IMAGE_FILE_MACHINE_ARM,
+ IMAGE_FILE_MACHINE_THUMB,
+ IMAGE_FILE_MACHINE_ARMNT,
+#endif
+
+#if defined(__x86_64__)
+ IMAGE_FILE_MACHINE_AMD64,
+#elif defined(__i386__)
+ IMAGE_FILE_MACHINE_I386,
+#endif
+
+#if defined(__riscv) && (__riscv_xlen == 32)
+ IMAGE_FILE_MACHINE_RISCV32,
+#endif
+
+#if defined(__riscv) && (__riscv_xlen == 64)
+ IMAGE_FILE_MACHINE_RISCV64,
+#endif
+ 0 };
+
+/**
+ * efi_print_image_info() - print information about a loaded image
+ *
+ * If the program counter is located within the image the offset to the base
+ * address is shown.
+ *
+ * @obj: EFI object
+ * @image: loaded image
+ * @pc: program counter (use NULL to suppress offset output)
+ * Return: status code
+ */
+static efi_status_t efi_print_image_info(struct efi_loaded_image_obj *obj,
+ struct efi_loaded_image *image,
+ void *pc)
+{
+ printf("UEFI image");
+ printf(" [0x%p:0x%p]",
+ obj->reloc_base, obj->reloc_base + obj->reloc_size - 1);
+ if (pc && pc >= obj->reloc_base &&
+ pc < obj->reloc_base + obj->reloc_size)
+ printf(" pc=0x%zx", pc - obj->reloc_base);
+ if (image->file_path)
+ printf(" '%pD'", image->file_path);
+ printf("\n");
+ return EFI_SUCCESS;
+}
+
+/**
+ * efi_print_image_infos() - print information about all loaded images
+ *
+ * @pc: program counter (use NULL to suppress offset output)
+ */
+void efi_print_image_infos(void *pc)
+{
+ struct efi_object *efiobj;
+ struct efi_handler *handler;
+
+ list_for_each_entry(efiobj, &efi_obj_list, link) {
+ list_for_each_entry(handler, &efiobj->protocols, link) {
+ if (!guidcmp(handler->guid, &efi_guid_loaded_image)) {
+ efi_print_image_info(
+ (struct efi_loaded_image_obj *)efiobj,
+ handler->protocol_interface, pc);
+ }
+ }
+ }
+}
+
+/**
+ * efi_loader_relocate() - relocate UEFI binary
+ *
+ * @rel: pointer to the relocation table
+ * @rel_size: size of the relocation table in bytes
+ * @efi_reloc: actual load address of the image
+ * @pref_address: preferred load address of the image
+ * Return: status code
+ */
static efi_status_t efi_loader_relocate(const IMAGE_BASE_RELOCATION *rel,
- unsigned long rel_size, void *efi_reloc)
+ unsigned long rel_size, void *efi_reloc,
+ unsigned long pref_address)
{
+ unsigned long delta = (unsigned long)efi_reloc - pref_address;
const IMAGE_BASE_RELOCATION *end;
int i;
+ if (delta == 0)
+ return EFI_SUCCESS;
+
end = (const IMAGE_BASE_RELOCATION *)((const char *)rel + rel_size);
- while (rel < end - 1 && rel->SizeOfBlock) {
+ while (rel < end && rel->SizeOfBlock) {
const uint16_t *relocs = (const uint16_t *)(rel + 1);
i = (rel->SizeOfBlock - sizeof(*rel)) / sizeof(uint16_t);
while (i--) {
uint32_t offset = (uint32_t)(*relocs & 0xfff) +
rel->VirtualAddress;
int type = *relocs >> EFI_PAGE_SHIFT;
- unsigned long delta = (unsigned long)efi_reloc;
uint64_t *x64 = efi_reloc + offset;
uint32_t *x32 = efi_reloc + offset;
uint16_t *x16 = efi_reloc + offset;
case IMAGE_REL_BASED_DIR64:
*x64 += (uint64_t)delta;
break;
+#ifdef __riscv
+ case IMAGE_REL_BASED_RISCV_HI20:
+ *x32 = ((*x32 & 0xfffff000) + (uint32_t)delta) |
+ (*x32 & 0x00000fff);
+ break;
+ case IMAGE_REL_BASED_RISCV_LOW12I:
+ case IMAGE_REL_BASED_RISCV_LOW12S:
+ /* We know that we're 4k aligned */
+ if (delta & 0xfff) {
+ printf("Unsupported reloc offset\n");
+ return EFI_LOAD_ERROR;
+ }
+ break;
+#endif
default:
printf("Unknown Relocation off %x type %x\n",
offset, type);
/* If the system doesn't support icache_all flush, cross our fingers */
}
-/*
+/**
+ * efi_set_code_and_data_type() - determine the memory types to be used for code
+ * and data.
+ *
+ * @loaded_image_info: image descriptor
+ * @image_type: field Subsystem of the optional header for
+ * Windows specific field
+ */
+static void efi_set_code_and_data_type(
+ struct efi_loaded_image *loaded_image_info,
+ uint16_t image_type)
+{
+ switch (image_type) {
+ case IMAGE_SUBSYSTEM_EFI_APPLICATION:
+ loaded_image_info->image_code_type = EFI_LOADER_CODE;
+ loaded_image_info->image_data_type = EFI_LOADER_DATA;
+ break;
+ case IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER:
+ loaded_image_info->image_code_type = EFI_BOOT_SERVICES_CODE;
+ loaded_image_info->image_data_type = EFI_BOOT_SERVICES_DATA;
+ break;
+ case IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER:
+ case IMAGE_SUBSYSTEM_EFI_ROM:
+ loaded_image_info->image_code_type = EFI_RUNTIME_SERVICES_CODE;
+ loaded_image_info->image_data_type = EFI_RUNTIME_SERVICES_DATA;
+ break;
+ default:
+ printf("%s: invalid image type: %u\n", __func__, image_type);
+ /* Let's assume it is an application */
+ loaded_image_info->image_code_type = EFI_LOADER_CODE;
+ loaded_image_info->image_data_type = EFI_LOADER_DATA;
+ break;
+ }
+}
+
+/**
+ * efi_load_pe() - relocate EFI binary
+ *
* This function loads all sections from a PE binary into a newly reserved
- * piece of memory. On successful load it then returns the entry point for
- * the binary. Otherwise NULL.
+ * piece of memory. On success the entry point is returned as handle->entry.
+ *
+ * @handle: loaded image handle
+ * @efi: pointer to the EFI binary
+ * @loaded_image_info: loaded image protocol
+ * Return: status code
*/
-void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info)
+efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi,
+ struct efi_loaded_image *loaded_image_info)
{
IMAGE_NT_HEADERS32 *nt;
IMAGE_DOS_HEADER *dos;
const IMAGE_BASE_RELOCATION *rel;
unsigned long rel_size;
int rel_idx = IMAGE_DIRECTORY_ENTRY_BASERELOC;
- void *entry;
+ uint64_t image_base;
uint64_t image_size;
unsigned long virt_size = 0;
- bool can_run_nt64 = true;
- bool can_run_nt32 = true;
- uint16_t image_type;
-
-#if defined(CONFIG_ARM64)
- can_run_nt32 = false;
-#elif defined(CONFIG_ARM)
- can_run_nt64 = false;
-#endif
+ int supported = 0;
dos = efi;
if (dos->e_magic != IMAGE_DOS_SIGNATURE) {
printf("%s: Invalid DOS Signature\n", __func__);
- return NULL;
+ return EFI_LOAD_ERROR;
}
nt = (void *) ((char *)efi + dos->e_lfanew);
if (nt->Signature != IMAGE_NT_SIGNATURE) {
printf("%s: Invalid NT Signature\n", __func__);
- return NULL;
+ return EFI_LOAD_ERROR;
+ }
+
+ for (i = 0; machines[i]; i++)
+ if (machines[i] == nt->FileHeader.Machine) {
+ supported = 1;
+ break;
+ }
+
+ if (!supported) {
+ printf("%s: Machine type 0x%04x is not supported\n",
+ __func__, nt->FileHeader.Machine);
+ return EFI_LOAD_ERROR;
}
/* Calculate upper virtual address boundary */
}
/* Read 32/64bit specific header bits */
- if (can_run_nt64 &&
- (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)) {
+ if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
IMAGE_NT_HEADERS64 *nt64 = (void *)nt;
IMAGE_OPTIONAL_HEADER64 *opt = &nt64->OptionalHeader;
+ image_base = opt->ImageBase;
image_size = opt->SizeOfImage;
- efi_reloc = efi_alloc(virt_size, EFI_LOADER_DATA);
+ efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
+ efi_reloc = efi_alloc(virt_size,
+ loaded_image_info->image_code_type);
if (!efi_reloc) {
- printf("%s: Could not allocate %ld bytes\n",
- __func__, virt_size);
- return NULL;
+ printf("%s: Could not allocate %lu bytes\n",
+ __func__, virt_size);
+ return EFI_OUT_OF_RESOURCES;
}
- entry = efi_reloc + opt->AddressOfEntryPoint;
+ handle->entry = efi_reloc + opt->AddressOfEntryPoint;
rel_size = opt->DataDirectory[rel_idx].Size;
rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
- image_type = opt->Subsystem;
- } else if (can_run_nt32 &&
- (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC)) {
+ virt_size = ALIGN(virt_size, opt->SectionAlignment);
+ } else if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
IMAGE_OPTIONAL_HEADER32 *opt = &nt->OptionalHeader;
+ image_base = opt->ImageBase;
image_size = opt->SizeOfImage;
- efi_reloc = efi_alloc(virt_size, EFI_LOADER_DATA);
+ efi_set_code_and_data_type(loaded_image_info, opt->Subsystem);
+ efi_reloc = efi_alloc(virt_size,
+ loaded_image_info->image_code_type);
if (!efi_reloc) {
- printf("%s: Could not allocate %ld bytes\n",
- __func__, virt_size);
- return NULL;
+ printf("%s: Could not allocate %lu bytes\n",
+ __func__, virt_size);
+ return EFI_OUT_OF_RESOURCES;
}
- entry = efi_reloc + opt->AddressOfEntryPoint;
+ handle->entry = efi_reloc + opt->AddressOfEntryPoint;
rel_size = opt->DataDirectory[rel_idx].Size;
rel = efi_reloc + opt->DataDirectory[rel_idx].VirtualAddress;
- image_type = opt->Subsystem;
+ virt_size = ALIGN(virt_size, opt->SectionAlignment);
} else {
printf("%s: Invalid optional header magic %x\n", __func__,
nt->OptionalHeader.Magic);
- return NULL;
- }
-
- switch (image_type) {
- case IMAGE_SUBSYSTEM_EFI_APPLICATION:
- loaded_image_info->image_code_type = EFI_LOADER_CODE;
- loaded_image_info->image_data_type = EFI_LOADER_DATA;
- break;
- case IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER:
- loaded_image_info->image_code_type = EFI_BOOT_SERVICES_CODE;
- loaded_image_info->image_data_type = EFI_BOOT_SERVICES_DATA;
- break;
- case IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER:
- case IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER:
- loaded_image_info->image_code_type = EFI_RUNTIME_SERVICES_CODE;
- loaded_image_info->image_data_type = EFI_RUNTIME_SERVICES_DATA;
- break;
- default:
- printf("%s: invalid image type: %u\n", __func__, image_type);
- break;
+ return EFI_LOAD_ERROR;
}
/* Load sections into RAM */
}
/* Run through relocations */
- if (efi_loader_relocate(rel, rel_size, efi_reloc) != EFI_SUCCESS) {
+ if (efi_loader_relocate(rel, rel_size, efi_reloc,
+ (unsigned long)image_base) != EFI_SUCCESS) {
efi_free_pages((uintptr_t) efi_reloc,
(virt_size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT);
- return NULL;
+ return EFI_LOAD_ERROR;
}
/* Flush cache */
flush_cache((ulong)efi_reloc,
- ALIGN(virt_size, CONFIG_SYS_CACHELINE_SIZE));
+ ALIGN(virt_size, EFI_CACHELINE_SIZE));
invalidate_icache_all();
/* Populate the loaded image interface bits */
loaded_image_info->image_base = efi;
loaded_image_info->image_size = image_size;
+ handle->reloc_base = efi_reloc;
+ handle->reloc_size = virt_size;
- return entry;
+ return EFI_SUCCESS;
}
git.openpandora.org / pandora-u-boot.git / blobdiff